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author | Morph <39850852+Morph1984@users.noreply.github.com> | 2020-11-29 16:54:09 +0100 |
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committer | Morph <39850852+Morph1984@users.noreply.github.com> | 2020-12-18 16:33:28 +0100 |
commit | d46ca5a0157a5267b4c2ebf0515f1a492434071a (patch) | |
tree | a10347483315f757056382b4d552098d32c4e9f8 /src/core/hle/service/ns/pl_u.cpp | |
parent | ns_vm: Stub NeedsUpdateVulnerability (diff) | |
download | yuzu-d46ca5a0157a5267b4c2ebf0515f1a492434071a.tar yuzu-d46ca5a0157a5267b4c2ebf0515f1a492434071a.tar.gz yuzu-d46ca5a0157a5267b4c2ebf0515f1a492434071a.tar.bz2 yuzu-d46ca5a0157a5267b4c2ebf0515f1a492434071a.tar.lz yuzu-d46ca5a0157a5267b4c2ebf0515f1a492434071a.tar.xz yuzu-d46ca5a0157a5267b4c2ebf0515f1a492434071a.tar.zst yuzu-d46ca5a0157a5267b4c2ebf0515f1a492434071a.zip |
Diffstat (limited to 'src/core/hle/service/ns/pl_u.cpp')
-rw-r--r-- | src/core/hle/service/ns/pl_u.cpp | 30 |
1 files changed, 12 insertions, 18 deletions
diff --git a/src/core/hle/service/ns/pl_u.cpp b/src/core/hle/service/ns/pl_u.cpp index c8a215845..71c7587db 100644 --- a/src/core/hle/service/ns/pl_u.cpp +++ b/src/core/hle/service/ns/pl_u.cpp @@ -27,29 +27,11 @@ namespace Service::NS { -enum class FontArchives : u64 { - Extension = 0x0100000000000810, - Standard = 0x0100000000000811, - Korean = 0x0100000000000812, - ChineseTraditional = 0x0100000000000813, - ChineseSimple = 0x0100000000000814, -}; - struct FontRegion { u32 offset; u32 size; }; -constexpr std::array<std::pair<FontArchives, const char*>, 7> SHARED_FONTS{ - std::make_pair(FontArchives::Standard, "nintendo_udsg-r_std_003.bfttf"), - std::make_pair(FontArchives::ChineseSimple, "nintendo_udsg-r_org_zh-cn_003.bfttf"), - std::make_pair(FontArchives::ChineseSimple, "nintendo_udsg-r_ext_zh-cn_003.bfttf"), - std::make_pair(FontArchives::ChineseTraditional, "nintendo_udjxh-db_zh-tw_003.bfttf"), - std::make_pair(FontArchives::Korean, "nintendo_udsg-r_ko_003.bfttf"), - std::make_pair(FontArchives::Extension, "nintendo_ext_003.bfttf"), - std::make_pair(FontArchives::Extension, "nintendo_ext2_003.bfttf"), -}; - // The below data is specific to shared font data dumped from Switch on f/w 2.2 // Virtual address and offsets/sizes likely will vary by dump [[maybe_unused]] constexpr VAddr SHARED_FONT_MEM_VADDR{0x00000009d3016000ULL}; @@ -80,6 +62,18 @@ static void DecryptSharedFont(const std::vector<u32>& input, Kernel::PhysicalMem offset += transformed_font.size() * sizeof(u32); } +void DecryptSharedFontToTTF(const std::vector<u32>& input, std::vector<u8>& output) { + ASSERT_MSG(input[0] == EXPECTED_MAGIC, "Failed to derive key, unexpected magic number"); + + const u32 KEY = input[0] ^ EXPECTED_RESULT; // Derive key using an inverse xor + std::vector<u32> transformed_font(input.size()); + // TODO(ogniK): Figure out a better way to do this + std::transform(input.begin(), input.end(), transformed_font.begin(), + [&KEY](u32 font_data) { return Common::swap32(font_data ^ KEY); }); + transformed_font[1] = Common::swap32(transformed_font[1]) ^ KEY; // "re-encrypt" the size + std::memcpy(output.data(), transformed_font.data() + 2, transformed_font.size() * sizeof(u32)); +} + void EncryptSharedFont(const std::vector<u32>& input, std::vector<u8>& output, std::size_t& offset) { ASSERT_MSG(offset + (input.size() * sizeof(u32)) < SHARED_FONT_MEM_SIZE, |